diff --git a/bower.json b/bower.json
index 93612ea..4841dbd 100644
--- a/bower.json
+++ b/bower.json
@@ -2,8 +2,8 @@
   "name": "paper-ripple",
   "private": true,
   "dependencies": {
-    "core-icon": "Polymer/core-icon#master",
-    "core-icons": "Polymer/core-icons#master",
-    "font-roboto": "Polymer/font-roboto#master"
+    "core-icon": "Polymer/core-icon#>=0.4.0 <1.0.0",
+    "core-icons": "Polymer/core-icons#>=0.4.0 <1.0.0",
+    "font-roboto": "Polymer/font-roboto#>=0.4.0 <1.0.0"
   }
 }
\ No newline at end of file